Home / 100,377.23-138,399.44-86,740.88

Finding the Fourth Proportional to 100,377.23, 138,399.44 and 86,740.88

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Solution

The fourth proportional to 100,377.23, 138,399.44 and 86,740.88 is: 119,597.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,377.23 : 138,399.44 = 86,740.88 : x
  2. Step 2: Convert to fraction form
    100,377.23/138,399.44 = 86,740.88/x
  3. Step 3: Cross multiply
    100,377.23x = 138,399.44 × 86,740.88
  4. Step 4: Simplify right side
    100,377.23x = 12,004,888,091.41
  5. Step 5: Solve for x
    x = 12,004,888,091.41/100,377.23
  6. Step 6: Final answer
    x = 119,597.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.